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osu-lazer/osu.Game.Rulesets.Osu/Skinning/FollowCircle.cs
2022-07-15 16:40:48 +09:00

76 lines
2.3 KiB
C#

// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
// See the LICENCE file in the repository root for full licence text.
using osu.Framework.Allocation;
using osu.Framework.Bindables;
using osu.Framework.Graphics;
using osu.Framework.Graphics.Containers;
using osu.Game.Rulesets.Objects.Drawables;
using osu.Game.Rulesets.Osu.Objects.Drawables;
namespace osu.Game.Rulesets.Osu.Skinning
{
public abstract class FollowCircle : CompositeDrawable
{
[Resolved]
protected DrawableHitObject? ParentObject { get; private set; }
protected FollowCircle()
{
RelativeSizeAxes = Axes.Both;
}
[BackgroundDependencyLoader]
private void load()
{
((DrawableSlider?)ParentObject)?.Tracking.BindValueChanged(OnTrackingChanged, true);
}
protected override void LoadComplete()
{
base.LoadComplete();
if (ParentObject != null)
{
ParentObject.HitObjectApplied += onHitObjectApplied;
onHitObjectApplied(ParentObject);
ParentObject.ApplyCustomUpdateState += updateStateTransforms;
updateStateTransforms(ParentObject, ParentObject.State.Value);
}
}
private void onHitObjectApplied(DrawableHitObject drawableObject)
{
this.ScaleTo(1f)
.FadeOut();
}
private void updateStateTransforms(DrawableHitObject drawableObject, ArmedState state)
{
// Gets called by slider ticks, tails, etc., leading to duplicated
// animations which may negatively affect performance
if (drawableObject is not DrawableSlider)
return;
using (BeginAbsoluteSequence(drawableObject.HitStateUpdateTime))
OnSliderEnd();
}
protected override void Dispose(bool isDisposing)
{
base.Dispose(isDisposing);
if (ParentObject != null)
{
ParentObject.HitObjectApplied -= onHitObjectApplied;
ParentObject.ApplyCustomUpdateState -= updateStateTransforms;
}
}
protected abstract void OnTrackingChanged(ValueChangedEvent<bool> tracking);
protected abstract void OnSliderEnd();
}
}